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LeetCode 10-Min Timer

Adds a 10-minute countdown timer on LeetCode problems.

当前为 2025-03-10 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         LeetCode 10-Min Timer
  3. // @namespace    http://tampermonkey.net/
  4. // @version      1.0
  5. // @description  Adds a 10-minute countdown timer on LeetCode problems.
  6. // @author       Yange
  7. // @match        https://leetcode.com/problems/*
  8. // @grant        none
  9. // @license      MIT
  10. // ==/UserScript==
  11.  
  12. (function() {
  13.     'use strict';
  14.  
  15.     function createTimerButton() {
  16.         const button = document.createElement("button");
  17.         button.innerText = "Start 10m Timer";
  18.         button.style.position = "absolute";
  19.         button.style.bottom = "20px";
  20.         button.style.right = "20px";
  21.         button.style.padding = "10px";
  22.         button.style.backgroundColor = "#ff5722";
  23.         button.style.color = "white";
  24.         button.style.border = "none";
  25.         button.style.borderRadius = "5px";
  26.         button.style.cursor = "pointer";
  27.         button.style.fontSize = "14px";
  28.         button.style.zIndex = "9999";
  29.  
  30.         button.onclick = startTimer;
  31.         document.body.appendChild(button);
  32.     }
  33.  
  34.     function startTimer() {
  35.         let timeLeft = 10 * 60; // 10 minutes in seconds
  36.         const timerDisplay = document.createElement("div");
  37.         timerDisplay.style.position = "absolute";
  38.         timerDisplay.style.bottom = "50px";
  39.         timerDisplay.style.right = "20px";
  40.         timerDisplay.style.padding = "10px";
  41.         timerDisplay.style.backgroundColor = "#222";
  42.         timerDisplay.style.color = "#fff";
  43.         timerDisplay.style.borderRadius = "5px";
  44.         timerDisplay.style.fontSize = "16px";
  45.         timerDisplay.style.zIndex = "9999";
  46.         timerDisplay.innerText = "10:00";
  47.         document.body.appendChild(timerDisplay);
  48.  
  49.         const interval = setInterval(() => {
  50.             timeLeft--;
  51.             const minutes = Math.floor(timeLeft / 60);
  52.             const seconds = timeLeft % 60;
  53.             timerDisplay.innerText = `${minutes}:${seconds < 10 ? '0' : ''}${seconds}`;
  54.  
  55.             if (timeLeft <= 0) {
  56.                 clearInterval(interval);
  57.                 alert("Time is up!");
  58.                 timerDisplay.innerText = "Time's up!";
  59.                 timerDisplay.style.backgroundColor = "red";
  60.             }
  61.         }, 1000);
  62.     }
  63.  
  64.     createTimerButton();
  65. })();